Based on research done by CBInsights - https://www.cbinsights.com/research/startup-failure-reasons-top/ - "not the right team" was mentioned as the #3 most popular reason for the failure of a startup.
So the answer is "yes". Most startups experience conflict within their team-members.
Forgive me, but I think the more important question is "how do you avoid this conflict, or work with/around it?" Briefly answered:
1. Discuss expectations from day 1 - openly!
2. Divided areas of management and authority.
3. Decide on how decisions will be made.
4. Agree on a neutral third party who will decide when there is a deadlock/tie or conflict that cannot be decided within the team.
5. sign a Founder's agreement.
I've worked with over 300 entrepreneurs and am happy to help.
Good luck